Retrofit 传递json 和 复杂参数类型List<T>

@POST
Call<String> post(@Url String url, @Body String info);

public static RetrofitHttpService createRetrofitHttpService() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL + "/")
.addConverterFactory(StringConverterFactory.create())
.build();

RetrofitHttpService Service =
retrofit.create(RetrofitHttpService.class);
return Service;
}

package org.droidplanner.lelefly.retrofit;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import okhttp3.MediaType;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import okio.Buffer;
import retrofit2.Converter;
import retrofit2.Retrofit;

public class StringConverterFactory extends Converter.Factory {
private static final MediaType MEDIA_TYPE = MediaType.parse("application/json; charset=UTF-8");
public static StringConverterFactory create() {
return new StringConverterFactory();
}

private StringConverterFactory() {

}

@Override
public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations,
Retrofit retrofit) {
return new Converter<ResponseBody, String>(){
@Override
public String convert(ResponseBody value) throws IOException {
return value.toString();
}
};
}

@Override
public Converter<?, RequestBody> requestBodyConverter(Type type,
Annotation[] parameterAnnotations, Annotation[] methodAnnotations, Retrofit retrofit) {
return new Converter<String, RequestBody>(){
@Override
public RequestBody convert(String value) throws IOException {
Buffer buffer = new Buffer();
Writer writer = new OutputStreamWriter(buffer.outputStream(), "utf-8");
writer.write(value);
writer.close();
return RequestBody.create(MEDIA_TYPE, buffer.readByteString());
}
};
}
}

HttpUtil.post(Lconstant.base + Lconstant.ADD_UAV_MISSION,"[" +
resultStr +"]", new ResultCallBack() {
@Override
public void onSuccess(String url, String model) {
Log.i("===>>",model);
showToast("上传服务器成功");

}

@Override
public void onFailure(int statusCode, String errorMsg) {
showToast(errorMsg);
}
});